Worksheet 559 · Skill 4
Two-bearing fix
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At 0900 you take two bearings with a hand-bearing compass: Westfield church spire bears 265°M and Kittle water tank bears 146°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Tern Island tower to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Tern Island tower: ________ °T Distance: ________ nm
At 1105 you take two bearings with a hand-bearing compass: Westfield church spire bears 316°M and Heron Point Light bears 211°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "1" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "1": ________ °T Distance: ________ nm
At 0855 you take two bearings with a hand-bearing compass: Mill stack bears 197°M and Westfield church spire bears 292°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
At 0810 you take two bearings with a hand-bearing compass: Mill stack bears 159°M and Westfield church spire bears 247°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Red nun "2" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 0715 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 076°M and Mill stack bears 176°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "1" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "1": ________ °T Distance: ________ nm
At 1410 you take two bearings with a hand-bearing compass: Heron Point Light bears 247°M and Kittle water tank bears 168°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Tern Island tower to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Tern Island tower: ________ °T Distance: ________ nm
At 0900 you take two bearings with a hand-bearing compass: Gannet Rock daybeacon bears 121°M and Mill stack bears 172°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
At 0830 you take two bearings with a hand-bearing compass: Heron Point Light bears 235°M and Gannet Rock daybeacon bears 127°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Tern Island tower: 273 °T Distance: 1.67 nm | No. 559001 (worked solution) |
| 2 | Bearing from Green can "1": 268 °T Distance: 1.19 nm | No. 559002 (worked solution) |
| 3 | Bearing from Green can "3": 156 °T Distance: 1.25 nm | No. 559003 (worked solution) |
| 4 | Bearing from Red nun "2": 321 °T Distance: 3.41 nm | No. 559004 (worked solution) |
| 5 | Bearing from Green can "1": 124 °T Distance: 1.67 nm | No. 559005 (worked solution) |
| 6 | Bearing from Tern Island tower: 109 °T Distance: 1.58 nm | No. 559006 (worked solution) |
| 7 | Bearing from Green can "3": 310 °T Distance: 2.23 nm | No. 559007 (worked solution) |
| 8 | Bearing from Green can "3": 029 °T Distance: 0.97 nm | No. 559008 (worked solution) |